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TBHQ crude product synthesis process

A synthesis process and technology for crude products, applied in the field of synthesis technology of TBHQ crude products, can solve the problems of low production efficiency, complex production process, difficult implementation of process flow, etc., so as to improve work efficiency, overcome many processes, improve utilization rate and product quality. The effect of the yield

Inactive Publication Date: 2016-05-04
赵建英
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Problems solved by technology

In the current synthesis process of TBHQ crude product, the process flow is not easy to implement, the separation efficiency is low, the recycling of raw materials cannot be realized, the production process is complicated, and the production efficiency is low

Method used

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Effect test

Embodiment

[0012] The synthesis technique of the TBHQ crude product of the present embodiment, comprises the following steps:

[0013] (1) Pour 5 parts by weight of phosphoric acid and 0.5 parts by weight of water into the mixing tank, and then add 4 parts by weight of hydroquinone to the mixing tank for stirring;

[0014] (2) After stirring, put the mixed solution into the reactor and heat it to 69°C, then add 10 parts by weight of tert-butanol to the reactor;

[0015] (3) After continuing to heat up to 83°C, keep it warm for 3 hours to react;

[0016] (4) The reaction product was centrifuged, washed with water, and dehydrated to obtain crude TBHQ.

[0017] The synthesis process of TBHQ crude product can directly prepare TBHQ crude product without further processing, the process is simple, the measurement data is accurate, and it is easy to implement.

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Abstract

The present invention discloses a TBHQ crude product synthesis process, which comprises: 1) pouring 2-5 parts by weight of phosphoric acid and 0.2-0.5 part by weight of water into a stirring jar, adding 4-6 parts by weight of hydroquinone to the stirring jar, and stirring; 2) after the stirring, placing the mixed solution into a reaction kettle, heating to a temperature of 50-69 DEG C, and pouring 7-10 parts by weight of tert-butanol to the reaction kettle; 3) heating to a temperature of 73-83 DEG C, carrying out thermal insulation for 2-3 h, and carrying out a reaction; and 4) carrying out centrifugation separation on the reaction product, carrying out water washing, and dewatering to obtain the TBHQ crude product. According to the TBHQ crude product preparation process of the present invention, the water is adopted as the solvent while the use of the toluene as the solvent is abandoned, such that the pollution is low, the raw material utilization rate is high, and the TBHQ purity in the obtained TBHQ crude product is high.

Description

technical field [0001] The invention belongs to the field of chemical technology, in particular to a synthesis process of crude TBHQ. Background technique [0002] The synthesis process of TBHQ crude product at least includes basic processes such as centrifugal separation, water washing, and dehydration. In the current synthesis process of TBHQ crude product, the process flow is not easy to implement, the separation efficiency is low, the recycling of raw materials cannot be realized, the production process is complicated, and the production efficiency is low. Contents of the invention [0003] In order to overcome the above-mentioned technical problems existing in the prior art field, the object of the present invention is to provide a synthesis process of crude TBHQ. The present invention not only has a simple production process, improves work efficiency, but also realizes product quality assurance. [0004] The synthetic technique of TBHQ crude product provided by ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C39/08C07C37/16
Inventor 赵建英
Owner 赵建英
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